Answer:
Kinshasa
Step-by-step explanation:
The capital city of the Democratic Republic of Congo is Kinshasa. It is the largest city in the country and one of the most populated in Africa with an estimated population of 15 million people.
Kinshasa is very close to Brazzaville, the capital of the neighboring Republic of Congo. The two cities are so close that people in either city can see the other city from their respective cities.